STEREO RADARGRAMMETRY IN SOUTH-EAST ASIA USING TERRASAR-X STRIPMAP DATA

Stereo radargrammetry is a mature technique for deriving height information from SAR image pairs. Because stereo radargrammetry is less sensible to temporal decorrelation, it can provide better results than interferometric SAR in certain situations. Using TerraSAR-X stripmap stereo pairs, digital surface models (DSM) with good height accuracy can be generated. We use SRTM data as our initial DEM and a pyramid layer based approach for our radargrammetric processing. Our results are relative noisy with a high error standard deviation. Nevertheless, with a mean overall error of less than 3 m in height the final DSM is quite precise.